I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
kuna kina kana kune quinoa guanay guinea gun kin ken kino kaon keno keen kane kine gaun guan koan kain quin canna gonia guano gunny koine quean queen quoin
buna fauna kuna luna puna sauna tuna na un